CN1898337A - Crosslinkable, expandable polymeric compositions - Google Patents
Crosslinkable, expandable polymeric compositions Download PDFInfo
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- CN1898337A CN1898337A CNA2004800388878A CN200480038887A CN1898337A CN 1898337 A CN1898337 A CN 1898337A CN A2004800388878 A CNA2004800388878 A CN A2004800388878A CN 200480038887 A CN200480038887 A CN 200480038887A CN 1898337 A CN1898337 A CN 1898337A
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Abstract
The present invention is a crosslinkable, expandable polymeric composition comprising a free-radical crosslinkable polymer, a free-radical inducing species, a crosslinking-profile modifier, and a blowing agent. Preferably, the free-radical inducing species is a low temperature free-radical inducing species.
Description
Invention field
The present invention relates to carry out the expandable polymer compositions of radical crosslinking reaction.
Background technology
Many expandable polymers can carry out free radical reaction.Some are useful for crosslinked under required crosslinking temperature in those reactions, and other is deleterious as crosslinked too early or degraded.Therefore existing to promote useful crosslinking reaction to minimize the needs of the influence of adverse reaction simultaneously.
Usually, owing to be crosslinked purpose, processing free-radical crosslinkable, expandable polymer compositions are so with polymkeric substance and other composition elder generation melt-processed, carry out the crosslinked distribution of nominal (crosslinking profile) then.The melt-processed step is carried out under the nominal melt processing temperature.The crosslinked distribution of nominal has the part of three temperature correlations: (1) molding temperature part; (2) transition temperature part; (3) crosslinking temperature part.Depend on technology, the molding temperature part can partly be substituted by extrusion temperature.
The nominal melt processing temperature is directly relevant with free yl induction material (or linking agent) with selected polymkeric substance with the crosslinked distribution of nominal.Fig. 1 illustrates the crosslinked distribution of typical nominal.
For guaranteeing only to take place required crosslinking reaction, melt processing temperature and molding temperature are kept low to avoid crosslinked too early.After the melt-processed that desired level takes place, crosslinkable, expandable polymer compositions are transferred to mould or forcing machine.Under molding temperature, need make crosslinkable, expandable polymer compositions fill mould, then further heating combination and not crosslinked too early.In addition, need crosslinkable, expandable polymer compositions thermally equivalent before crosslinked beginning.
From the molding temperature part, crosslinkable, expandable polymer compositions process transition temperature part are to reach the nominal crosslinking temperature.If the free radical material is an organo-peroxide, the nominal crosslinking temperature directly depends on the decomposition temperature of superoxide.Therefore, the temperature range of transition temperature part is to be determined by the nominal molding temperature of low-temperature end and the nominal crosslinking temperature of temperature end.
Be important to note that in some applications melt-processed can be carried out in one step or in more than one step.For example with as one step, component can be joined the hopper of forcing machine separately and melt blending together under suitable melt processing temperature.The example of the rapid melt-processed of multistep can comprise first step, wherein with component in the melt temperature that is higher than polymkeric substance but be lower than blend together under the temperature of nominal decomposition temperature of free yl induction material; With second step, wherein blended composition is transferred to forcing machine and further processes.Melt processing temperature is defined as and comprises single stage or the rapid melt processing of multistep as used herein.
Because cross-linked speed increases gradually with temperature, therefore (promptly in the molding temperature part, initial melted polymer temperature when introducing mould) and crosslinking temperature partly (, the temperature of preferred cross-linked polymer) temperature contrast between (promptly, the transition temperature part) may be quite big, be typically greater than about 60 ℃ for injection-molded item.For compression molded article, transition temperature range can be above 140 ℃.Although crosslinking temperature changes with the selection of free yl induction material, the corresponding temperature scope of transition temperature part is unaffected usually.Therefore, the variation of crosslinking temperature (or free yl induction material) typically requires the correspondence of molding temperature to change.Similarly, typically exist the correspondence of melt processing temperature to change.
When composition being made the manufacturing goods, except that crosslinked distribution, other factors can influence crosslinked homogeneity, the cycling time of the homogeneity of cell size and crosslinkable, expandable polymer compositions.Those factors comprise whipping agent kinetics and goods geometrical shape (as, general thickness and thickness distribution).Understandably, the geometric complexity significant impact Products Quality and performance.
Therefore, need crosslinkable, expandable polymer compositions, said composition can produce evenly crosslinked manufacturing goods.Equally, need the manufacturing goods of acquisition to have uniform cell size.Crosslinkable, the expandable polymer compositions that need be able in suitable cycling time, process.Significantly, need crosslinkable, expandable polymer compositions, said composition produces the even crosslinked manufacturing goods with even cell size in suitable cycling time, even when the manufacturing goods will have complex geometric shapes.
In addition, need to use alternate crosslinkable, the expandable polymer compositions of low temperature free yl induction material as the conventional free radical inductive substance.Particularly, the free radical kick off temperature of low temperature free yl induction material should be lower than the free yl induction material that is generally used for crosslinkable, expandable polymer compositions.More particularly, when low temperature free yl induction material was organo-peroxide, decomposition temperature should be lower than the organo-peroxide that is generally used for crosslinkable, expandable polymer compositions.
Improving one's methods when in addition, needing crosslinkable, expandable polymer to be higher than conventional the use to be used for melt processing temperature.And this method should allow be higher than molding crosslinkable, expandable polymer under the conventional temperature of using.
Should satisfy all these requirements and be no more than conventional crosslinkable, expandable polymer compositions and use preparation to make the accessible too early crosslinked level of ordinary method of goods.Also need when being no more than too early crosslinked conventional levels or further minimizing too early crosslinked level, more operate under high processing temperature or the faster processing conditions.
Also need the temperature range of transition temperature part that the temperature range that provides in the common process is provided, also can negatively not influence crosslinked too early.Owing to minimize the transition heating of crosslinkable, expandable polymer compositions, so littler temperature range will obtain technology faster.
Also need violent as far as possible increase of transition temperature part and approaching infinite slope.In addition, need crosslinking temperature partly to have as far as possible near zero slope.
These need improved each should reach and conventional melt-processed process of not obvious change or cross-linking apparatus.
Summary of the invention
The present invention is the crosslinkable polymer (free-radical crosslinkablecopolymer) that comprises free radical, free yl induction material, crosslinkable, the expandable polymer compositions of crosslinked distribution properties-correcting agent and whipping agent.Preferably, the free yl induction material is a low temperature free yl induction material.
In addition, the present invention includes that preparation is crosslinked, expansible is made improving one's methods of goods.The example of appropriate method comprises injection moulding, compression molding, extrudes and thermoforming process.By composition or improve one's methods crosslinked, the expansible that make make goods and also think a part of the present invention.
The accompanying drawing summary
Fig. 1 shows that the nominal crosslinking temperature for the combination of the cross-linkable polymer compositions of free radical and free yl induction material distributes.
Fig. 2 shows the viewgraph of cross-section of the sole that is made by representative crosslinkable of the present invention, expandable polymer compositions, and said composition comprises short-half-life free yl induction material.
Detailed Description Of The Invention
" conventional free radical is induced material " is illustrated in the non-existent situation of crosslinked distribution modifier as used herein, selects with minimumization crosslinked and promote the free yl induction material of reasonable crosslinked circulation time too early. Except other factors, when the conventional free radical material was the organic peroxy compound, selective dependency was in the peroxide nominal decomposition temperature under various processing/crosslinked temperature and its half-life.
About the organic peroxy compound as used herein " nominal decomposition temperature " be illustrated in the temperature of 90% peroxide breakdown in 12 minutes.
" fusion induction time " is illustrated in the melt processing temperature of polymer composition as used herein, 100 circulation per minutes, under 0.5 radian of spending, the polymer composition torque value of being measured by mobile die head rheometer (MDR) increases by 0.4 lbin of required time amount more than minimum torque.
Under the nominal melt processing temperature, the fusion induction time is called nominal fusion induction time (t
0. 04n-fusion) or the torque time (t that begins to increase
Beginning).If the fusion induction time is cycle longer time under the nominal melt processing temperature, the time cycle is called improved fusion induction time.
Equally, if be issued to the time cycle that equals nominal fusion induction time at higher melt processing temperature, the time cycle is called improved fusion induction time.
" mould induction time " is illustrated in the molding temperature of polymer composition as used herein, 100 circulation per minutes, under 0.5 radian of spending, the polymer composition torque value of being measured by mobile die head rheometer (MDR) increases by 0.4 lbin of required time amount more than minimum torque.
Under the nominal molding temperature, the mould induction time is called nominal molding induction time (t
0.04n-mould).If the mould induction time is cycle longer time under the nominal molding temperature, the time cycle is called improved mould induction time.Equally, if be issued to the time cycle that equals nominal mould induction time at higher molding temperature, the time cycle is called improved mould induction time.
The present invention is the crosslinkable polymer that comprises (a) free radical, (b) low temperature free yl induction material, (c) crosslinked distribution properties-correcting agent and (d) crosslinkable, the expandable polymer compositions of whipping agent.
Under the non-existent situation of crosslinked distribution properties-correcting agent, the combination of the crosslinkable polymer of free radical and conventional free radical inductive substance has the nominal melt processing temperature and is issued to nominal fusion induction time at the nominal melt processing temperature.Notice when using extrusion equipment, can be by increasing the temperature that shear energy improves melt processing temperature.When shear energy has when contribution to reach required fusion induction time within the scope of the invention to melt processing temperature.
The combination of the crosslinkable polymer of free radical and conventional free radical inductive substance also has and comprises the crosslinked distribution of following nominal: (a) nominal molding temperature part, (b) nominal transition temperature part and (c) nominal crosslinking temperature part.This is combined in the nominal molding temperature and is issued to nominal mould induction time.When using the nominal process condition, this combination of processing under its nominal process speed.
The crosslinkable polymer of various free radicals is used for the present invention.In addition, the many polymkeric substance that are unsuitable for radical crosslinking up to now are used for the present invention.Significantly, the polymkeric substance with high melting temperature is suitable for radical crosslinking now.Especially, melt temperature is equal to or higher than about 130 ℃ or radical crosslinking polymkeric substance with short nominal induction time is useful in the present invention.For example, the present invention is particularly suitable for the crosslinkable polymer of free radical and nominal induction time less than about 5 minutes or even less than the combination of about one minute free yl induction material.
Preferably, the crosslinkable polymer of free radical is a hydro carbons.Suitable hydrocarbon polymer comprises the ethylene/propylene/diene hydrocarbon monomer, ethylene/propylene rubber, ethylene/alpha-olefin copolymer, Alathon, alfon, ethene/unsaturated ester multipolymer, the ethylene/styrene interpolymer, halogenated polyethylene, propylene copolymer, natural rubber, styrene/butadiene rubbers, styrene/butadiene/styrene block copolymers, styrene/ethylene/butadiene/styrene copolymers, polybutadiene rubber, isoprene-isobutylene rubber, chloroprene rubber, chlorosulfonated polyethylene rubber, ethene/diene copolymer, and paracril, and blend.
About suitable ethene polymers, the crosslinkable polymer of free radical belongs to four primary categories usually: (1) is highly branched; (2) inhomogeneous linearity; (3) even branching linearity; (4) even branching substantially linear.These polymkeric substance can adopt ziegler natta catalyst, metallocenes or vanadium class single site catalyst or the preparation of constrained geometry single site catalyst.
Highly branched ethene polymers comprises new LDPE (film grade) (LDPE).Those polymkeric substance can adopt the preparation down of radical initiator and high temperature and high pressure.Perhaps, they can adopt coordination catalyst to prepare under high temperature and relatively low pressure power.The density that these polymkeric substance are measured by ASTM D-792 is that every cubic centimetre of about 0.910 gram restrains every cubic centimetre to about 0.940.
Inhomogeneous linear tetrafluoroethylene polymer comprises linear low density polyethylene (LLDPE), ultra-low density polyethylene (ULDPE), very low density polyethylene (VLDPE) and high density polyethylene(HDPE) (HDPE).The density of linear low density ethylene polymkeric substance be every cubic centimetre of about 0.850 gram to about 0.940 gram every cubic centimetre and by ASTM 1238, the melting index that condition I measures is about 0.01 to per 10 minutes of about 100 grams.Preferably, melting index be about 0.1 to about 50 the gram per 10 minutes.Also preferably, LLDPE is that ethene contains 3-18 carbon atom, the more preferably interpolymer of other alpha-olefin of 3-8 carbon atom with one or more.Preferred comonomer comprises 1-butylene, 4-methyl-1-pentene, 1-hexene and 1-octene.
Ultra-low density polyethylene and very low density polyethylene are known interchangeably.The density of these polymkeric substance is that every cubic centimetre of about 0.870 gram arrives every cubic centimetre of about 0.910 gram.High density ethylene polymer normally density is every cubic centimetre of homopolymer to every cubic centimetre of about 0.965 gram of about 0.941 gram.
Evenly the branching linear tetrafluoroethylene polymer comprises even LLDPE.Evenly branching/uniform polymeric is those polymkeric substance, wherein comonomer in given interpolymer molecule random distribution and wherein interpolymer molecule in this interpolymer, have similar ethene/comonomer ratio.
Evenly branching substantially linear ethene polymers comprises (a) C
2-C
20Alkene, as the homopolymer of ethene, propylene and 4-methyl-1-pentene, (b) ethene and at least a C
3-C
20Alpha-olefin, C
2-C
20Acetylene series unsaturated monomer, C
4-C
18Diolefine, or the interpolymer of combination of monomers and (c) ethene and at least a C
3-C
20The interpolymer of alpha-olefin, diolefine or acetylene series unsaturated monomer and other unsaturated monomer.The density of these polymkeric substance is generally every cubic centimetre of about 0.850 gram and arrives every cubic centimetre of about 0.970 gram.Preferably, density is that every cubic centimetre of about 0.85 gram arrives every cubic centimetre of about 0.955 gram, more preferably from about 0.850 restrains every cubic centimetre to every cubic centimetre of 0.920 gram.
Be used for ethylene/styrene interpolymer of the present invention and comprise the basic random copolymer for preparing by the following material of polymerization: olefinic monomer (promptly, ethene, propylene, or 'alpha '-olefin monomers) and vinylidene aromatic monomer, hindered aliphatic vinylidene monomer or alicyclic vinylidene monomer.Suitable olefinic monomer comprises 2-20, preferred 2-12, more preferably 2-8 carbon atom.Preferred such monomer comprises ethene, propylene, 1-butylene, 4-methyl-1-pentene, 1-hexene and 1-octene.Most preferably be ethene and ethene and propylene or C
4-8The combination of alpha-olefin.Randomly, ethylene/styrene interpolymer polymeric component also can comprise ethylenically unsaturated monomer such as strain cycloolefin.The example of strain cycloolefin comprises norbornylene and C
1-10Alkyl-or C
6-10The norbornylene that aryl replaces.
Being used for ethene of the present invention/unsaturated ester multipolymer can be by conventional pressure technique preparation.Unsaturated ester can be alkyl acrylate, alkyl methacrylate or vinyl carboxylates.Alkyl can contain 1-8 carbon atom and preferably contain 1-4 carbon atom.Carboxylate radical can contain 2-8 carbon atom and preferably contain 2-5 carbon atom.The multipolymer part that belongs to the ester comonomer can in the weight of multipolymer, be preferably about 15 to about 40wt% for about 5 to about 50wt%.The example of acrylate and methacrylic ester is ethyl propenoate, methyl acrylate, methyl methacrylate, tert-butyl acrylate, n-butyl acrylate, n-BMA and 2-EHA.The example of vinyl carboxylates is vinyl acetate, propionate and vinyl butyrate.The melting index of ethene/unsaturated ester multipolymer can restrain per 10 minutes to about 50 for about 0.5.
Be used for vinyl halide polymers of the present invention comprise fluoridize, chlorination and brominated olefin polymers.Base olefin polymer can be homopolymer or the interpolymer that contains the alkene of 2-18 carbon atom.Preferably, olefin polymer is ethene and propylene or the interpolymer that contains the 'alpha '-olefin monomers of 4-8 carbon atom.Preferred alpha-olefin comonomer comprises 1-butylene, 4-methyl-1-pentene, 1-hexene and 1-octene.Preferably, alkenyl halide polymer is a chlorinatedpolyethylene.
The example that is used for propene polymer of the present invention comprises the multipolymer of alfon and propylene and ethene or another kind of unsaturated comonomer.Multipolymer also comprises terpolymer, tetrapolymer etc.Typically, polypropylene copolymer comprises that quantity is at least about the unit of the derived from propylene of 60wt%.Preferably, propylene monomer be multipolymer at least about 70wt%, more preferably at least about 80wt%.
Be used for the high-molecular weight polymer that natural rubber of the present invention comprises isoprene.Preferably, the number-average degree of polymerization of natural rubber is about 5000 and has a wide molecular weight distribution.
Useful styrene/butadiene rubbers comprises the random copolymers of vinylbenzene and divinyl.Typically, these rubber are by radical polymerization production.Styrene/butadiene/styrene block copolymers of the present invention is a phase-separated system.Be used for styrene/ethylene/butadiene/styrene copolymers of the present invention and be hydrogenated styrene/butadiene/styrene copolymers and make.
Be used for polybutadiene rubber of the present invention preferably 1, the homopolymer of 4-divinyl.Preferably, isoprene-isobutylene rubber of the present invention is the multipolymer of iso-butylene and isoprene.The usage quantity of isoprene typically is about 1.0wt% to about 3.0wt%.
For the present invention, chloroprene rubber is the polymkeric substance of chlorbutadiene normally.Preferably, rubber is by letex polymerization production.In addition, polymerization can be carried out to introduce in polymkeric substance crosslinked in the presence of sulphur.
Preferably, paracril of the present invention is the random copolymers of divinyl and vinyl cyanide.
The crosslinkable polymer of the free radical that other is useful comprises silicon rubber and fluorocarbon rubber.Silicon rubber comprises having the rubber of form for the siloxane main chain of-Si-O-Si-O-.Be used for fluorocarbon rubber of the present invention and comprise that the multipolymer of vinylidene fluoride and cure site monomer or terpolymer are so that radical crosslinking.
Useful free yl induction material comprises organo-peroxide and azo radical initiator.Organo-peroxide can add by directly injecting.These free yl induction materials can be used in combination as two cumenes, oxygen and air with other radical initiator.Oxygen-enriched environment also can cause useful free radical.
The nominal decomposition temperature that is used for organo-peroxide of the present invention is lower than the organo-peroxide that is generally used for using.For example, compare with two (t-butyl peroxy sec.-propyl) benzene as conventional organo-peroxide, t-butyl per(oxy)benzoate is to be used for required superoxide of the present invention.Show and land, the nominal decomposition temperature of two (t-butyl peroxy sec.-propyl) benzene be 175 ℃ (promptly, the temperature of 90% peroxide breakdown in 12 fens clock times) and the transformation period under 140 ℃ be 94 minutes, and the nominal decomposition temperature of t-butyl per(oxy)benzoate is that 140 ℃ and the transformation period under 140 ℃ are 4.4 minutes.
Preferably, the amount that the free yl induction material exists is about 0.1 to about 10phr (part each hundred parts by weight of rubber), more preferably from about 0.5 arrives about 5.0phr and even more preferably from about 1.0 arrives about 4phr.
Preferably, the amount of free yl induction material existence is enough to reach and the same at least high cross-linking density of accessible cross-linking density under the non-existent situation of crosslinked distribution properties-correcting agent.
The useful example of crosslinked distribution properties-correcting agent is that radical initiator is stablized organic free radical as (i) hindered amine deutero-, (ii) iniferter, (iii) organometallic compound, (iv) arylazo oxygen base and (v) nitroso compound.The selection of crosslinked distribution properties-correcting agent is according to determining whether properties-correcting agent gives the induction time big at least 5 times with respect to the nominal induction time.
Preferably, the amount of crosslinking temperature distribution properties-correcting agent existence is about 0.01 to about 5.0phr.More preferably, be about 0.05 to about 3.0phr, even more preferably, about 0.1 to about 3.0phr.
When crosslinked distribution properties-correcting agent is added combination and whipping agent, can make resulting crosslinkable, expandable polymer compositions be issued to improved fusion induction time at the nominal melt processing temperature.That improved fusion induction time is enough to make is inflatable, cross-linkable polymer compositions carried out melt-processed before crosslinked beginning.Crosslinked distribution properties-correcting agent also can make resulting crosslinkable, expandable polymer compositions be issued to improved fusion induction time in the temperature that is higher than the nominal melt processing temperature.
Crosslinked distribution properties-correcting agent can make resulting crosslinkable, expandable polymer compositions be issued to improved mould induction time at the nominal molding temperature.Improved mould induction time is enough to make inflatable, cross-linkable polymer compositions thermally equivalent before crosslinked beginning.
Preferably, improved mould induction time is bigger at least 5 times than nominal mould induction time.More preferably, improved mould induction time is bigger at least 10 times than nominal mould induction time.Even more preferably, improved mould induction time is at least 15 times big.
Preferably, crosslinked distribution properties-correcting agent can make resulting crosslinkable, expandable polymer compositions be issued to improved mould induction time in the temperature that is higher than the nominal molding temperature.More preferably, improved mould induction time is enough to make inflatable, and cross-linkable polymer compositions is thermally equivalent under the temperature that is higher than the nominal molding temperature.Most preferably, crosslinked distribution properties-correcting agent makes even heating under crosslinking temperature.
Preferably, crosslinked distribution properties-correcting agent allows to reach and the same at least fast solidification rate of accessible solidification rate under the non-existent situation of crosslinked distribution properties-correcting agent.
Preferably, crosslinkable of the present invention, expandable polymer compositions can be processed into the manufacturing goods under the speed than conventional composition (nominal process speed) fast at least 20%.More preferably, generation rate improves and not to cross-linking density, crosslinked homogeneity, or the cell size homogeneity has a negative impact in the manufacturing goods that obtain.
Suitable hindered amine deutero-is stablized organic free radical and is comprised 2,2,6,6 ,-tetramethyl-piperidyl oxygen (TEMPO) and derivative thereof.More preferably, the hindered amine deutero-is stablized TEMPO, PROXYL, DOXYL, di-t-butyl N oxygen base, dimethyl diphenyl tetramethyleneimine-1-oxygen base, the 4 phosphonato TEMPO of ester that organic free radical is two-TEMPO, oxo-TEMPO, 4-hydroxyl-TEMPO, 4-hydroxyl-TEMPO, polymkeric substance combination or is contained the metal complexes of TEMPO.Even more preferably, it is two-TEMPO or 4-hydroxyl-TEMPO that the hindered amine deutero-is stablized organic free radical.The example of two-TEMP is two (1-oxygen base-2,2,6,6-tetramethyl piperidine-4-yl) sebates.
Iniferter is the compound that can draw and stop free radical reaction.They also can be reversible the polymer chain of termination growth.When crosslinking temperature distribution properties-correcting agent is iniferter, it is preferably selected from tetraethylthiuram disulfide, benzyl N, N diethyldithiocarbamate, dithiocarbamate, polythio carbamate and S benzyl dithiocarbamate.
Crosslinking temperature distribution properties-correcting agent and low temperature free yl induction material can adopt combined in various manners with the crosslinked polymkeric substance of free redical, comprise direct compounding, directly soak and directly injection.
Whipping agent can be chemistry or pneumatogen.Preferably, whipping agent is a chemical foaming agent.The example of useful chemical foaming agent is a Cellmic C 121.More preferably, whipping agent is the chemical foaming agent of its activation temperature within the nominal crosslinking temperature distributes.
Preferably, when whipping agent was chemical foaming agent, the amount that it exists was about 0.05 to about 6.0phr.More preferably, about 0.5 to about 5.0phr, even more preferably, about 1.5 to about 3.0phr.
Crosslinkable, expandable polymer compositions also can comprise the organic crosslinked distribution properties-correcting agent with two keys, wherein organic crosslinked distribution properties-correcting agent and crosslinking temperature distribution properties-correcting agent is collaborative to come (a) under the temperature less than the nominal solidification value of free yl induction material, suppress free radical crosslinkable polymer cross-linked speed and (b) under the nominal solidification value of free yl induction material, improve cross-linking density.Preferably, organic crosslinked distribution properties-correcting agent is three (2,4-two-tert-butyl-phenyl) phosphorous acid ester, poly-[[6-[(1,1,3,3,-tetramethyl--butyl) amino-s-triazine-2,4-two bases] [2,2,6,6 ,-tetramethyl--4-piperidyl] imino-] hexa-methylene [2,2,6,6-tetramethyl--4-piperidyl] imino-]], 2 (2 '-hydroxyl-3 ', 5 '-two-tert-pentyl phenyl) and benzotriazole, or its blend.
Crosslinkable, expandable polymer compositions also can comprise non-polar additives, and wherein additive improves cross-linking properties and can not cause crosslinking temperature distribution properties-correcting agent to the migration of making product surface, and this is made goods and is prepared by crosslinkable polymer composition.Preferably, non-polar additives is decadiene or polyhutadiene.
Crosslinkable, expandable polymer compositions also can comprise auxiliary curing agent or the coagent cross-linking properties with raising free yl induction material, and do not increase the free yl induction material.The raising of cross-linking properties can comprise solidification rate and state of cure.When the crosslinkable polymer of free radical was chlorinatedpolyethylene, the adding of auxiliary curing agent was particularly advantageous.Useful auxiliary curing agent comprises polyvinyl reagent and some mono-vinyl reagent such as αJia Jibenyixi dimer, allyl group tetramethylolmethane (or pentaerythritol triacrylate), TAC, TAIC, 4-allyl group-2-p-methoxy-phenyl allyl ethers and 1,3-two-isopropenylbenzene.Other useful auxiliary curing agent comprises the compound with following chemical structure:
When crosslinkable, when expandable polymer compositions comprises auxiliary curing agent, the amount that auxiliary curing agent preferably exists is less than about 5.0phr.More preferably, about 0.1 to about 4.0phr, even more preferably, about 0.2 to about 3.0phr.
Crosslinkable, expandable polymer compositions also can comprise increases the catalyzer that free radical forms.The suitable example of catalyzer comprises tertiary amine, cobalt naphthenate, manganese naphthenate, vanadium pentoxide and quaternary ammonium salt.
Other additive also can be used for crosslinkable of the present invention, expandable polymer compositions.Those additives comprise incipient scorch inhibitor, oxidation inhibitor, filler, clay, processing aid, carbon black, fire retardant, superoxide, dispersion agent, wax, coupler, releasing agent, photostabilizer, metal passivator, softening agent, static inhibitor, whitening agent, nucleator, other polymkeric substance, and tinting material.Crosslinkable, expandable polymer compositions can be highly-filled.
Other suitable non-halogenated flame retardant additives comprises hibbsite, magnesium hydroxide, red phosphorus, silicon-dioxide, aluminum oxide, titanium dioxide, melamine, six lime borates, aluminum oxide, carbon nanotube, wollastonite, mica, siloxane polymer, phosphoric acid ester, hindered amine stabilizer, ammonium octamolybdate, expansion compound, melamine octamolybdate, frit, hollow glass microballoon, talcum, clay, organo-clay, zinc borate, antimonous oxide and expansible black lead.Suitable halogenated flame-retarding additive comprises decabromodiphynly oxide, decabrominated dipheny base ethane, ethylidene-two (tetrabromo phthalimide) and two (hexachlorocyclopentadiene) cyclooctane.
In another selective embodiment, the present invention is the crosslinkable polymer that comprises free radical, short-half-life free yl induction material, crosslinkable, the expandable polymer compositions of crosslinked distribution properties-correcting agent and whipping agent.When activating under specified temperature, the transformation period ratio of short-half-life free yl induction material is generally used for as crosslinkable, and the free yl induction material of the following combinations of substances of expandable polymer compositions is short: the crosslinkable polymer of free radical and whipping agent.Select the conventional free yl induction material of selecting or not short-half-life free yl induction material to avoid crosslinked too early simultaneously rational crosslinked cycling time to minimize crosslinked too early and to promote.
Preferably, when they activated under approximately identical temperature, the transformation period of short-half-life free yl induction material was than soon at least 20% of conventional free radical inductive substance.More preferably, the transformation period of short-half-life free yl induction material soon at least 30%, even more preferably soon at least 50%.
When the crosslinkable polymer that crosslinked distribution properties-correcting agent is joined free radical, in the time of in short-half-life free yl induction material and the whipping agent, it can make resulting crosslinkable, expandable polymer compositions be issued to improved fusion induction time at the nominal melt processing temperature.Inflatable, cross-linkable polymer compositions melt-processed before crosslinked beginning that improved fusion induction time is enough to make.
Preferably, improved fusion induction time is than at least 5 times greatly of nominal fusion induction times.More preferably, improved fusion induction time is than at least 10 times greatly of nominal fusion induction times.Even more preferably, at least 15 times greatly of improved fusion induction times.
Preferably, crosslinked distribution properties-correcting agent makes resulting crosslinkable, expandable polymer compositions be issued to improved fusion induction time in the temperature that is higher than the nominal melt processing temperature.
Equally, crosslinked distribution properties-correcting agent can make resulting crosslinkable, expandable polymer compositions be issued to improved mould induction time at the nominal molding temperature.Improved mould induction time is enough to make inflatable, cross-linkable polymer compositions thermally equivalent before crosslinked beginning.
Preferably, improved mould induction time is than at least 5 times greatly of nominal mould induction times.More preferably, improved mould induction time is than at least 10 times greatly of nominal mould induction times.Even more preferably, at least 15 times greatly of improved mould induction times.
Preferably, crosslinked distribution properties-correcting agent makes resulting crosslinkable, expandable polymer compositions be issued to improved mould induction time in the temperature that is higher than the nominal molding temperature.
Substitute the conventional free yl induction material of selecting by short-half-life free yl induction material and make that also cross-linked speed increases under approximately identical crosslinking temperature.Preferably, can under than the speed of conventional composition fast at least 20%, crosslinkable of the present invention, expandable polymer compositions be processed into the manufacturing goods.More preferably, composition of the present invention can reach fast at least 40% process rate.Even more preferably, generation rate improves and not to cross-linking density, crosslinked homogeneity, or the cell size homogeneity produces harmful effect in the manufacturing goods that obtain.
In another embodiment, the present invention is that said composition comprises the crosslinkable polymer of free radical, low temperature free yl induction material by crosslinkable of the present invention, the expansible of expandable polymer compositions preparation, crosslinked manufacturing goods, crosslinked distribution properties-correcting agent, and whipping agent.Preferably, the size of abscess is uniform substantially.Also preferably, crosslinked is uniform substantially.
In another embodiment, the present invention is that said composition comprises the crosslinkable polymer of free radical, short-half-life free yl induction material by crosslinkable of the present invention, the expansible of expandable polymer compositions preparation, crosslinked manufacturing goods, crosslinked distribution properties-correcting agent, and whipping agent.Preferably, the size of abscess is uniform substantially.Also preferred, crosslinked is uniform substantially.
In another embodiment, the present invention is that preparation is crosslinked, expansible is made improving one's methods of goods.Method comprises the steps: (a) melt-processed crosslinkable, expandable polymer compositions, (b) moulding compound become to make shape of products and (c) crosslinked and intumescent composition be the manufacturing goods of moulding.Said composition comprises the crosslinkable polymer of free radical, low temperature free yl induction material, whipping agent and crosslinked distribution properties-correcting agent.The present invention also comprises the manufacturing goods of the preparation of improving one's methods thus.
Under the comparable transformation period, the nominal decomposition temperature of low temperature free yl induction material is lower than the free yl induction material that is generally used for as the combination of the following material of crosslinkable, expandable polymer compositions: the crosslinkable polymer of free radical and whipping agent.Select the conventional free yl induction material of selecting to minimize crosslinked too early and to promote do not select low temperature free yl induction material to avoid crosslinked too early simultaneously reasonable crosslinked cycling time.
Under the non-existent situation of crosslinked distribution properties-correcting agent, the composition of the crosslinkable polymer of free radical and the conventional free yl induction material of selecting has the nominal melt processing temperature and is issued to nominal fusion induction time at the nominal melt processing temperature.
The combination of the crosslinkable polymer of free radical and the conventional free yl induction material of selecting also has and comprises as the crosslinked distribution of the nominal of lower section: (a) nominal molding temperature part, (b) nominal transition temperature part and (c) nominal crosslinking temperature part.This is combined in the nominal molding temperature and is issued to nominal mould induction time.
When the crosslinkable polymer that crosslinked distribution properties-correcting agent is joined free radical, in the time of in low temperature free yl induction material and the whipping agent, can make resulting crosslinkable, expandable polymer compositions be issued to improved fusion induction time at the nominal melt processing temperature.Inflatable, cross-linkable polymer compositions melt-processed before crosslinked beginning that improved fusion induction time is enough to make.
Preferably, improved fusion induction time is than at least 5 times greatly of nominal fusion induction times.More preferably, improved fusion induction time is than at least 10 times greatly of nominal fusion induction times.Even more preferably, at least 15 times greatly of improved fusion induction times.
Preferably, crosslinked distribution properties-correcting agent makes resulting crosslinkable, expandable polymer compositions be issued to improved fusion induction time in the temperature that is higher than the nominal melt processing temperature.Therefore, in improving one's methods, can be under the temperature that is higher than the nominal melt processing temperature melt-processed composition.
Equally, crosslinked distribution properties-correcting agent can make resulting crosslinkable, expandable polymer compositions be issued to improved mould induction time at the nominal molding temperature.Improved mould induction time is enough to make inflatable, and cross-linkable polymer compositions is thermally equivalent before crosslinked beginning.
Preferably, improved mould induction time is than at least 5 times greatly of nominal mould induction times.More preferably, improved mould induction time is than at least 10 times greatly of nominal mould induction times.Even more preferably, at least 15 times greatly of improved mould induction times.
Preferably, crosslinked distribution properties-correcting agent makes resulting crosslinkable, expandable polymer compositions be issued to improved mould induction time in the temperature that is higher than the nominal molding temperature.Therefore, in improving one's methods, can be under the temperature that is higher than the nominal molding temperature processing compositions.
Substituting the conventional free yl induction material of selecting by low temperature free yl induction material also makes crosslinking temperature be reduced to lower nominal decomposition temperature.Preferably, can under speed, crosslinkable of the present invention, expandable polymer compositions be processed into the manufacturing goods than conventional composition fast at least 20%.More preferably, composition of the present invention can reach fast at least 40% process rate.Even more preferably, the improvement of generation rate and not to cross-linking density, crosslinked homogeneity, or the homogeneity of cell size produces harmful effect in the manufacturing goods that obtain.
In another embodiment, the present invention is that preparation is crosslinked, expansible is made improving one's methods of goods.Method comprises the steps: (a) melt-processed crosslinkable, expandable polymer compositions, (b) moulding compound become to make shape of products and (c) crosslinked and intumescent composition be the manufacturing goods of moulding.Said composition comprises the crosslinkable polymer of free radical, short-half-life free yl induction material, whipping agent and crosslinked distribution properties-correcting agent.The present invention also comprises the manufacturing goods of the preparation of improving one's methods thus.
When activating under approximately identical temperature, the transformation period of short-half-life free yl induction material lacks than the free yl induction material that is generally used for as the combination of the following material of crosslinkable, expandable polymer compositions: the crosslinkable polymer of free radical and whipping agent.Select the conventional free yl induction material of selecting to minimize crosslinked too early and to promote do not select short-half-life free yl induction material to avoid crosslinked too early simultaneously rational crosslinked cycling time.
Under the non-existent situation of crosslinked distribution properties-correcting agent, the combination of the crosslinkable polymer of free radical and the conventional free yl induction material of selecting has the nominal melt processing temperature and is issued to nominal fusion induction time at the nominal melt processing temperature.
The combination of the crosslinkable polymer of free radical and the conventional free yl induction material of selecting also has and comprises as the crosslinked distribution of the nominal of lower section: (a) nominal molding temperature part, (b) nominal transition temperature part and (c) nominal crosslinking temperature part.This is combined in the nominal molding temperature and is issued to nominal mould induction time.
When the crosslinkable polymer that crosslinked distribution properties-correcting agent is joined free radical, short-half-life free yl induction material, with in the whipping agent time, it can make resulting crosslinkable, expandable polymer compositions be issued to improved fusion induction time at the nominal melt processing temperature.Inflatable, cross-linkable polymer compositions melt-processed before crosslinked beginning that improved fusion induction time is enough to make.
Preferably, improved fusion induction time is than at least 5 times greatly of nominal fusion induction times.More preferably, improved fusion induction time is than at least 10 times greatly of nominal fusion induction times.Even more preferably, at least 15 times greatly of improved fusion induction times.
Preferably, crosslinked distribution properties-correcting agent makes resulting crosslinkable, expandable polymer compositions be issued to improved fusion induction time in the temperature that is higher than the nominal melt processing temperature.Therefore, in improved method, can be under the temperature that is higher than the nominal melt processing temperature melt-processed composition.
Equally, crosslinked distribution properties-correcting agent can make resulting crosslinkable, expandable polymer compositions be issued to improved mould induction time at the nominal molding temperature.Improved mould induction time is enough to make inflatable, cross-linkable polymer compositions thermally equivalent before crosslinked beginning.
Preferably, improved mould induction time is than at least 5 times greatly of nominal mould induction times.More preferably, improved mould induction time is than at least 10 times greatly of nominal mould induction times.Even more preferably, at least 15 times greatly of improved mould induction times.
Preferably, crosslinked distribution properties-correcting agent makes resulting crosslinkable, expandable polymer compositions be issued to improved mould induction time in the temperature that is higher than the nominal molding temperature.Therefore, can be under the temperature that is higher than the nominal molding temperature moulding compound.
Substitute the conventional free yl induction material of selecting by short-half-life free yl induction material and make that also cross-linked speed increases under approximately identical crosslinking temperature.Preferably, can under than the speed of conventional composition fast at least 20%, crosslinkable of the present invention, expandable polymer compositions be processed into the manufacturing goods.More preferably, composition of the present invention can reach fast at least 40% process rate.Even more preferably, the improvement of generation rate and not to cross-linking density, crosslinked homogeneity, or the homogeneity of cell size produces harmful effect in the manufacturing goods that obtain.
In other was used, the present invention was used in particular for footwear, automobile, furniture, foam and furnishings and uses.Useful especially manufacturing goods by the present invention's preparation comprise sole, polycomponent sole (polymkeric substance that comprises different densities and type), weathering overburden, pad, section bar, durable commodity, the flat tire plug-in part of operation, structure plate, leisure and sports equipment foam, energy management foam, acoustic management foam, insulating foam and other foam.
Embodiment
Following non-limiting example has illustrated the present invention.
Testing method
Following testing method is used to estimate non-restrictive example:
(1) density
According to ASTM D-792 measuring density.Specimen preparation test specimen by three 2.1cm * 2.3cm of cutting from uncured (uncored) moulded parts.
Then, each sample was regulated minimum 12 hours before test, preferably after producing more than 7 days or 7 days.Under 23 ± 2 ℃ and 50 ± 1% humidity, regulate.
To each sample weighing dry weight.Then, one glass of distilled water is placed on the balance, and claims the tare weight of balance.Test specimen is added the entry neutralization weighs once more.By with dry weight divided by the weight in wet base bulk density.To restrain every square centimeter of record numerical value.
(2) hardness
Measure hardness (Asker C) according to ASTM D-2240.Each sample was regulated minimum 12 hours before test, preferably after producing more than 7 days or 7 days.Under 23 ± 2 ℃ and 50 ± 1% humidity, regulate.
The minimum thickness of test specimen is 6mm.Under adjusting condition and apart from minimum 12mm place, any edge of sample, test.When the sample skinning, allow cortex at the plate top with measure between two parties.Measure scale of hardness after about 10 seconds exerting pressure.Write down average 5 times and measure, measure for 5 times be carry out on the different positions of sample and between each measuring point distance be 6mm at least.
(3) gel level
According to ASTM D-2765, process A measures gel level (gel per-cent).Solvent is a dimethylbenzene.Grind each sample and make that particle can be by U.S.No.30 sieve but do not sieve by U.S.No.60.
In 1750ml dimethylbenzene, mix a gram sample.51 gram oxidation inhibitor are added mixture.The oxidation inhibitor that uses is Cyanox 22462,2 '-methylene-bis (4-methyl-6-tert butyl phenol), available from Cytec Industries Inc.
With mixture boiling 12 hours.Extract gel, and be positioned in mercury less than 28 and 150 ℃ vacuum drying oven 12 hours.Cooling gel is 1 hour in moisture eliminator.Then gel is weighed.Analysis is carried out twice.
(4) ratio of expansion
In mould, adopt two points of spacing distance indication of 10mm.After mould takes out the illustration material, measure the distance between 2 immediately.After 30 minutes, measure the same distance between 2 once more; This divided by 10, is recorded as ratio of expansion with numerical value.
(5) shrink
Measure contraction (per-cent) according to SATRA standard P M-70.By three 150mm * 25mm * 5mm specimen preparation test specimens of curing mold goods cutting never.Be in from the 25mm at each edge of 150mm length and produce the shallow cut the sample.
Then, each sample was regulated minimum 12 hours before test, preferably after producing more than 7 days or 7 days.Under 23 ± 2 ℃ and 50 ± 1% humidity, regulate.After at least 3 hours regulate, measure the length between 150mm length upper cut.
After regulating, test specimen is placed into the baking oven 24 hours that is set at 50 ± 2 ℃ or is set at 70 ± 2 ℃ baking oven 4 hours.
Then, sample was stood adjusting condition 30 minutes.Measure the length of sample then.
(6) compression set
Measure compression set (per-cent) according to ASTM D-3574.5 circles that have 2.8cm diameter and 9.4mm thickness by curing mold goods cutting never are with the preparation test specimen.Three samples of each test analysis.
Then, each sample was regulated minimum 12 hours before test, preferably after producing more than 7 days or 7 days.Under 23 ± 2 ℃ and 50 ± 1% humidity, regulate.
After regulating, test specimen is compressed to 50 ± 1% of its original depth.In 15 minutes and apply under the compression, sample is positioned over the baking oven 6 hours that is set at 50 ± 2 ℃.Then, make sample stand adjusting condition 40 minutes.Measure the thickness of sample then.
(7) split tear
Measure split tear according to SATRA standard TM-65.Test specimen is cut to the size of 25mm * 75mm * 5mm.Be cut into the center of sample with the dark otch of 16mm.
Then, each sample was regulated minimum 12 hours before test, preferably after producing more than 7 days or 7 days.Under 23 ± 2 ℃ and 50 ± 1% humidity, regulate.
To cut open interval velocity and be set at 100mm/min.With every centimetre of record of kilogram observed value.
The illustration composition
Estimate four compositions.Following component is used to prepare composition:
(a) Elvax460
TMEthylene/vinyl acetate copolymer, this multipolymer comprises the 18wt% vinyl acetate, and melting index is 2.5 grams per 10 minutes and available from DuPont;
(b) Perkadox1440
TMTwo (t-butyl peroxy sec.-propyl) benzene, nominal decomposition temperature (temperature of 90% peroxide breakdown in 12 fens clock times) is 175 ℃, the transformation period under 140 ℃ is 94 minutes and available from Akzo NobelChemicals BV;
(c) Trigonox C/50D
TMT-butyl per(oxy)benzoate, nominal decomposition temperature are 140 ℃, and the transformation period under 140 ℃ is 4.4 minutes and available from AkzoNobel Chemicals BV;
(d) TAC70
TMTriallyl cyanurate is available from Akzo Nobel ChemicalsBV;
(e) 4-hydroxyl-TEMPO is available from A.H.Marks;
(f) AZO AZ130
TMCellmic C 121 is available from Crompton Uniroyal;
(g) zinc oxide;
(h) Zinic stearas; With
(i) lime carbonate.
Each composition comprises 100phr Elvax460
TMEthylene/vinyl acetate copolymer, 2.40phr AZO AZ130
TMCellmic C 121,2.00phr zinc oxide, 0.10phr Zinic stearas and 5.00phr lime carbonate.The quantity of remaining ingredient sees Table 1.
Table 1
| Component | The comparative example 1 | The comparative example 2 | Embodiment 3 | Embodiment 4 |
| Perkadox 1440 TM | 2.00 | 1.59 | 0.00 | 0.00 |
| Trigonox C/50D TM | 0.00 | 0.00 | 1.48 | 2.08 |
| TAC70 TM | 0.00 | 0.28 | 0.00 | 0.00 |
| 4-hydroxyl-TEMPO | 0.00 | 0.25 | 0.12 | 0.17 |
Use the civilian dress sole, the thick mould of 8-mm is estimated the illustration formulation.Formulation uses 106 ℃ molding temperature and 180 ℃ crosslinking temperature.
The material that is illustrated as comparative example 1 shows after the curing of the cell size control go on business and distortion and 360 seconds at least.And after 300 seconds, the material that is illustrated as comparative example 2 shows the dimensional stability of going on business, and it demonstrates the gel content that can compare with the gel content that adopts comparative example 1 to reach after 360 seconds.After 300 seconds, the material that is illustrated as embodiment 3 does not demonstrate distortion and demonstrates good dimensional stability.Fig. 2 illustrates the viewgraph of cross-section by the sole of the crosslinkable of embodiment 3, expandable polymer compositions preparation.
For determine adopting comparative example 1 and 2 and the minimum time that requires of the gentle non-distortion goods produced of embodiment 3, making composition crosslinked down, and after some time limit, estimating 175 ℃ or 180 ℃.Determine to produce the minimum time of the sole that (1) gentle nothing is out of shape or (2) are protruding and be out of shape.Table 2 shows result of study.
Table 2
| Formulation | Temperature (℃) | Time (second) | The heel outward appearance |
| The comparative example 1 | 175 | 480 | Protruding and distortion |
| The comparative example 1 | 175 | 600 | Gentle nothing distortion |
| The comparative example 2 | 175 | 480 | Protruding and distortion |
| The comparative example 2 | 175 | 600 | Gentle nothing distortion |
| Embodiment 3 | 175 | 300 | Gentle nothing distortion |
| Embodiment 3 | 180 | 240 | Gentle nothing distortion |
Measure several universal performances of illustration formulation.Those performances see Table 3.
Table 3
| Formulation | Solidification value | Set time | Density | Hardness (not skinning) | Hardness (skinning) | The % gel | Ratio of expansion | % shrinks (50C) | % shrinks (70C) | Compression set | Split tear |
| The comparative example 1 | 180 | 300 | 0.227 | 62.4 | 55.4 | 93.84 | 1.6 | 1.78 | 3.25 | 49.76 | 3.028 |
| The comparative example 2 | 180 | 240 | 0.182 | 54.4 | 46.8 | 90.18 | 1.7 | 0.97 | 0.97 | 62.19 | 3.6 |
| The comparative example 2 | 180 | 300 | 0.207 | 57.8 | 51.0 | 95.52 | 1.7 | 1.13 | 2.77 | 52.06 | 2.77 |
| Embodiment 3 | 180 | 240 | 0.184 | 56.4 | 50.2 | 91.73 | 1.7 | 1.30 | 3.26 | 50.81 | 2.26 |
| Embodiment 3 | 180 | 300 | 0.180 | 52.4 | 49.2 | 88.90 | 1.7 | 1.62 | 3.24 | 52.60 | 2.11 |
| Embodiment 4 | 180 | 240 | 0.155 | 54.2 | 45.0 | 80.9 | 1.8 | 0.40 | 1.13 | 73.49 | 2.86 |
| Embodiment 4 | 180 | 180 | 0.147 | 52.0 | 48.4 | 76.9 | 1.7 | 0.40 | 1.13 | 72.24 | 3.87 |
Claims (20)
1. a crosslinkable, expandable polymer compositions comprise:
(a) crosslinkable polymer of free radical;
(b) low temperature free yl induction material;
(c) crosslinked distribution properties-correcting agent; With
(d) whipping agent.
2. crosslinkable according to claim 1, expandable polymer compositions, wherein whipping agent is selected from chemical foaming agent or pneumatogen.
3. crosslinkable according to claim 1, expandable polymer compositions, wherein whipping agent is that activation temperature distributes with interior chemical foaming agent at the nominal crosslinking temperature.
4. crosslinkable according to claim 1, expandable polymer compositions, the amount that wherein crosslinked distribution properties-correcting agent exists are enough to make crosslinkable, expandable polymer compositions thermally equivalent when heating.
5. crosslinkable according to claim 1, expandable polymer compositions, wherein crosslinked distribution properties-correcting agent reach and the identical at least fast solidification rate of accessible solidification rate under the non-existent situation of crosslinked distribution properties-correcting agent it.
6. crosslinkable according to claim 1, expandable polymer compositions, wherein the amount of free yl induction material existence is enough to make it to reach and the identical at least high cross-linking density of accessible cross-linking density under the non-existent situation of crosslinked distribution properties-correcting agent.
7. crosslinkable according to claim 1, expandable polymer compositions, further comprise auxiliary curing agent, the amount that this auxiliary curing agent exists is enough to make it to reach and the identical at least high cross-linking density of accessible cross-linking density under the non-existent situation of crosslinked distribution properties-correcting agent.
8. make goods by crosslinked, the expansible of the preparation of the described crosslinkable of claim 1, expandable polymer compositions.
9. crosslinked, expansible according to claim 8 is made goods, and wherein the size of abscess is uniform substantially.
10. crosslinked, expansible according to claim 8 is made goods, and wherein crosslinked is uniform substantially.
11. a crosslinkable, expandable polymer compositions comprise:
(a) crosslinkable polymer of free radical;
(b) short-half-life free yl induction material;
(c) crosslinked distribution properties-correcting agent; With
(d) whipping agent.
12. one kind prepares crosslinked, expansible and makes improving one's methods of goods, comprises the steps:
(i) melt-processed crosslinkable, expandable polymer compositions, said composition comprises:
(1) crosslinkable polymer of free radical,
(2) low temperature free yl induction material,
(3) whipping agent and
(4) crosslinked distribution properties-correcting agent;
(ii) molding crosslinkable, expandable polymer compositions become to make shape of products; With
(iii) crosslinked and expansion crosslinkable, expandable polymer compositions are the manufacturing goods of moulding.
13. according to claim 12 improving one's methods, the amount that wherein crosslinked distribution properties-correcting agent exists is enough to make crosslinkable, expandable polymer compositions thermally equivalent in molding step.
14. one kind prepares crosslinked, expansible and makes improving one's methods of goods, comprises the steps:
(i) crosslinkable, the expandable polymer compositions of melt-processed, said composition comprises:
(1) crosslinkable polymer of free radical,
(2) short-half-life free yl induction material,
(3) whipping agent and
(4) crosslinked distribution properties-correcting agent;
(ii) molding crosslinkable, expandable polymer compositions become to make shape of products; With
(iii) crosslinked and expansion crosslinkable, expandable polymer compositions are the manufacturing goods of moulding.
15. be used to prepare crosslinked, expansible and make improving one's methods of goods according to claim 12-14 is arbitrarily described, wherein melt-processed is carried out under the temperature that is higher than the nominal melt processing temperature.
16. be used to prepare crosslinked, expansible and make improving one's methods of goods according to claim 12-15 is arbitrarily described, wherein be molded under the temperature that is higher than the nominal molding temperature and carry out.
17. according to any described the improving one's methods of claim 12-16, wherein processing is to carry out at least about 20% soon than nominal process speed.
18. make goods according to crosslinked, expansible according to any described method preparation of 12-17.
19. crosslinked, expansible according to claim 18 is made goods, wherein goods are soles.
20. crosslinked, expansible according to claim 19 is made goods, wherein goods are polycomponent soles.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
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| US53249103P | 2003-12-24 | 2003-12-24 | |
| US60/532,491 | 2003-12-24 | ||
| US62525204P | 2004-11-05 | 2004-11-05 | |
| US60/625,252 | 2004-11-05 | ||
| PCT/US2004/043335 WO2005066279A2 (en) | 2003-12-24 | 2004-12-24 | Crosslinkable, expandable polymeric compositions |
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| CN1898337A true CN1898337A (en) | 2007-01-17 |
| CN1898337B CN1898337B (en) | 2012-11-21 |
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| CNA2004800389870A Pending CN1898339A (en) | 2003-12-24 | 2004-12-24 | Free radical initiated polymer crosslink |
| CNA2004800388863A Pending CN1898336A (en) | 2003-12-24 | 2004-12-24 | Rheological improvement of polymer |
| CNA2004800388882A Pending CN1898338A (en) | 2003-12-24 | 2004-12-24 | Thermoinversion crosslink of polymer |
| CNA2004800419698A Pending CN1918236A (en) | 2003-12-24 | 2004-12-24 | Free-radical crosslinkable polymers: improved process for crosslinking and compositions |
| CN2011101150074A Pending CN102268154A (en) | 2003-12-24 | 2004-12-24 | Thermally-reversible crosslinking of polymers |
| CNA2004800385901A Pending CN1898335A (en) | 2003-12-24 | 2004-12-24 | Free-radical initiation in the presence of a stable organic free radical and related compositions |
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| CNA2004800388863A Pending CN1898336A (en) | 2003-12-24 | 2004-12-24 | Rheological improvement of polymer |
| CNA2004800388882A Pending CN1898338A (en) | 2003-12-24 | 2004-12-24 | Thermoinversion crosslink of polymer |
| CNA2004800419698A Pending CN1918236A (en) | 2003-12-24 | 2004-12-24 | Free-radical crosslinkable polymers: improved process for crosslinking and compositions |
| CN2011101150074A Pending CN102268154A (en) | 2003-12-24 | 2004-12-24 | Thermally-reversible crosslinking of polymers |
| CNA2004800385901A Pending CN1898335A (en) | 2003-12-24 | 2004-12-24 | Free-radical initiation in the presence of a stable organic free radical and related compositions |
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| US7825200B2 (en) * | 2003-02-28 | 2010-11-02 | The Regents Of The University Of California | Controlled free radical grafting from polyolefins |
| JP4449751B2 (en) * | 2005-01-11 | 2010-04-14 | 横浜ゴム株式会社 | Modified polymer production method and modified polymer produced thereby |
| EP1772480B1 (en) * | 2005-10-06 | 2013-12-04 | Henkel AG & Co. KGaA | Reduction of transfer of vibrations |
| JP4122033B2 (en) * | 2005-10-21 | 2008-07-23 | 横浜ゴム株式会社 | Modified butyl rubber composition |
| AU2006308610A1 (en) * | 2005-11-04 | 2007-05-10 | Dow Global Technologies Inc. | Tap-mediated, rheology-modified polymers and preparation methods |
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